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Conditional Statements in C++


Conditional Statements in C++

If Statement

If Statement is used to check the Condition. If the Condition is True then It will enter into the if block and perform the operations. If the Condition is Flase then it will terminate the Program.

Syntax

if (condition)
{
       Statements;
}

Flow Chart
























If Else Statement

In this If the Condition is True then It will enter into the if block and perform the operations. If the Condition is False then it will enter into else block and execute the Statements.

Syntax

if (condition)
{
       Statements;
}
else
{
       Statements;
}

Flow Chart























If Else If Statement

It is used when we have multiple Conditions. In this If the Condition is True then It will enter into the if block and perform the operations. If the Condition is False then it will check another condition and so on.

Syntax

if (condition)
{
       Statements;
}
else if(condition)
{
       Statements;
}
.
.
.
else
{
      Statements;
}

Flow Chart


























Nested If Statement

It is used Check conditions step wise . In this If the Condition is True then It will enter into the if block and then it will check another condition and executes the statements. If the Condition is False will enter into else block and executes the statements.And this goes so on.

Syntax

if (condition)
{
     if(condition)
     {
       Statements;
      }
      else
     {
        Statements;
     }
}
else
{
       Statements;
}

Flow Chart






Switch Statements

It is used for multiway banching statements. In this the condition is matched based on cases.

Syntax

switch(choice)
{
    case Number/'Character':
Statements;
break;
.
.
.
.
case N:
Statements;
               break;
default:
Statements;
}

Programs

If Condition

WAP to check the entered number is Even?

















If-else Condition

WAP to check the entered number is Even or Odd?





















If-else-if Condition

Write a program to evaluate the Grade of a student for the following constraints:
If marks > 75 – grade A
If 60 < marks < 75 – grade B
If 45 < marks<60 – grade C
If 35 < marks<45 - grade D
If marks < 35 – grade E



















Nested If Condition

WAP to check the entered number is Even or Odd and Number Should be Greater than 10?






















Nested If Condition

Write Program to show the Working of Switch Statement using a Basic Calculator Program?

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